US2223615A

US2223615A - Lock

Info

Publication number: US2223615A
Application number: US303515A
Authority: US
Inventors: Edward N Jacobi
Original assignee: Briggs and Stratton Corp
Current assignee: Briggs and Stratton Corp
Priority date: 1939-11-09
Filing date: 1939-11-09
Publication date: 1940-12-03
Anticipated expiration: 1957-12-03

Description

E. N. JACOBI Loox Dec. 3, 1940.

Filed Nov. 9, 1959 4 Sheets-Sheet l 'dammi/W5 Edward N ambi Dec. 3, 1940. Ff N JACOB, 2,223,615

LOCK

Filed NOV. 9, 1939 4 Sheets-Sheet 2 MmfL/a/j Edward N Jambz E. N. JAcoBl LOCK Dec. 3, 1940.

4 Sheets-Sheet 3 Filed Nov. 9, 1959 Dec. 3, 1940. E; N JACOB, ;4 2,223,615

LOCK

Filed NOV. 9, 1939. 4 Sheets-Sheet 4 Patented Dec. 3, 17940` UNITED STATES; BATENT-f-OFFICE "72,223,6 1f5ff`fA y f LOCK' Briggs & Stratton' Corporation, 'Milwaukee'` Wis.`,acorpcration of Delaware Application November 9, 1939, Serial No.303,515

19 Claims. (Ciro-45,5)

This invention relates to locks, and refers particularly to key operated cylinder locks of the type used on automobiles in door handles and other exposed locations.

i inder and its casing. i

The present invention therefore has as one of its objects to provide a cover for locks'of rthe character described which not only closes the entrance to the keyway, but also covers the joint between the cylinder and its casing.

To be effective against a strong jet of water as projected from a hose during washing of the automobile, such covers must seal tightly all around the edge and the mounting for the cover must not break the continuity of the seatv at any point.

This invention achieves t the lock housing or casing.

his objective through the provision of novel means'for-mounting the cover, al1 parts of which lieinside an outer peripheral edge portion which engages aseat on Another object of this invention resides in the provision of improved means for holding the cover closed with a strong spring,y tension acting tion.

' on the lock to pull the same doWn-toclosed posi- A further object of this inventionis to provide a cover for locks of the character described which is so designed that it `may be yieldingly held in either closed or open position.

With the above and other objects ingview which will appear as the description proceeds, this invention resides in the novel construction, combination and arrangement of parts substantially as hereinafter described, and more particularly dened by the appended claims, it being understood that `such changes inthe precise embodiment of thehereindisclosed. invention maybe made as come within the scopeof the claims.

The accompanying drawingsillustrate several complete examples of the physical embodiment of the invention constructed in accordance with the 4best modes so far devised for the4 practical which:

esI thereof, l and in Figure 1 is-a sectional View through an automobile door handle showing a lock equipped with the cover of this invention, mounted therein;

yFigure 2 is a view similar toFigure f1, but with the cover in its open position;

Figure 3 is a perspective View of the cover, the lock cylinder, and the link by which the cover is connected to the lock cylinder;

YFigure 4 is a view similar to Figure 1, showing al modified embodiment of the invention;

` Figure`5 is a sectional View taken through Figure 4y on the plane of the line 5 5;

Figure 6 is a view similar to Figure 4, but showing the cover in its open position;

'A Figure 7 is a perspective View showing part of the door handleand part of the cover mounting means of that form of the invention shown lin Figures 4, 5 and 6;

Figure 8 is a view similar to Figure 1, illustrating another modied embodiment of the invention; A l

Figure 9 is a cross sectional View through Figure 8 on the plane of the line 9 3;

Figure 10 is a sectional View through Figure 8 on the plane of the line IU-l 0; and

Figure V11 is a perspective View of the cylinder and part of the cover supporting structure employed in that form of the invention shown in Figures 8, 9 and 10.

Referring now particularly tothe accompanying drawings in which like numerals indicate like parts throughout the several Views, the numeral 5 designates the supporting member or housing in which the lock of this invention is mounted. In the present instance, this supporting member is in the form offa door handle having a bore 6 to receive the casing 1 of the lock. The casing is secured the handle in any suitable manner and is bored to receive the rotatable lock cylinder 8. A v

The cylinder 8 vis of the type illustrated in PatentlNo.-1,965,336 issued to John W. FitzGerald yJuly 3, 1934, in which a locking bar 9 is projected to'an operative position engagingv in a groove formed in thefcasing, by key operable tumblers (not shown). The tumblers are retractible upon the insertion of a proper key I0 to a position at which the locking bar 9 is drawn into the conlines of Athe cylinder to free the same forrotation in the vcustomary manner. Rotation s cf thev cylinder `is transmitted through a stem Il extending rearwardly therefrom to the door latching mechanism.` (not shown).

In the embodiment of the invention illustrated in Figures 1 to 3, inclusive, the casing terminates a distance inwardly of the mouth of the bore 6 and the cylinder has an enlarged head I2 re ceived in the bore 6 outwardly of the casing. The space between the front of the head I2 and the mouth of the bore accommodates the mechanism by which a coverk I 3 is mounted.

The cover I3 in this instance is an unbroken disc having a peripheral edge portion I4 which engages a seat I5 at the' rim of the bore 6. As clearly shown in Figures 1 and 2, this seat and the contacting edge'portion of the cover slant downwardly and outwardly away from the peripheral edge or rim of the bore to direct liquid or foreign matter awayfrom the mouth of the bore. Ordinarily though,'fthe contact between the cover and its seat is sufficiently tight to preclude the passage of water or foreign matter 'into' the bore, so that it is only whensome particle of dirt gets under the cover to hold the same from seating properly that the slant of the con--V tacting surfaces on thecover and supporting member is important.

TheV cover is hingedly mounted on the rotatable lock cylinder by ,means of a lever or linkl, preferably in the form of a `die casting best shown in Figure 3. This link or lever has two spaced parallelA arms rI'I lbetween which a lug I8 on the head of the cylinder and a lug I9 on the inner face Vof, the4 coverl are received. These lugs are opposite one another across the center line` with relation to the link `or lever member I6 and are pivotally joined to the arms I'I by

pins

20 and 2|, respectively. v

Between the Apivotal connections provided by thepnsr 2o and 2I, ther .link or lever member I6 is pivotally attached, as. at 22, to the arms 23 rof la yoke member which slides4 on the stem II of the cylinder. These arms '23 slide in grooves 24 `and project through openings 25V in the cylinderihead to extend into recesses 26 in the inner faces of the arms I'I on the lever member.

A coil spring 2'! conned between the inner or rear end of the` lockvcylinder and the closed medial portion of the yoke member yieldingly urges the yoke membenrearwardly to draw the lever mem'benand consequently the cover, toward the cylinder.l In'this way, a1 strong spring tension is applied to the coverto hold the same firmly engaged with its seat. 4

Inr opening the cover toexpose the mouth of the keyWay,'-an,outward force applied on its edge opposite vthe hinge ,-pin V2I causes the cover edge toride over the rim of the bore 6, swinging the lever-'member I3 outwardly, After a predeterminedmotion ofthe cover in this manner, its edge lportion adjacent to its lug I9 swings beyond dead center to its position'showngin Figure 2, the arms of` the lever memberII being cut away as at 28 to accommodate this edge portion of the cover.

Vihen the parts are moved to this position, the spring 2'I acts to yieldingly -hold the cover open, and in-this' position, an opening 29 through the lever ,member affords jaccess to the keyway to permitV the insertion of the key. In reclosing the lcover,.it is only necessary to flip the same beyond Vwith the cylinder, but is mounted from the 'sup` porting member orA door handle. In vthis instance, the cover 30 is hingedly mounted from the handle by a` link V3| pivotally connected to a Vlug'32 Von the'inner'face of the cover andjpivotally "connected .with the vvvhandle by having fa portion thereof conned in the bottom of a counterbore 33 by a lug 34 and the head 35 of the cylinder.

Two coil springs 36 are used to draw the-cover to its closed position. These springs encircle pins 3l pivotally connected to the cover at their hinged connection with the link 3| and slidably projecting through a fixed plate 38 which serves as a spring abutment. This plate is held in position by beingset in a notch 39 in the mouth of thebore of the handle where it is heldby the lock casing.

The springs 36, as stated, are coiled about the pins 3'I and have one end bearing against the inner face of the plate 38 and their opposite ends connected to the rear end-s of the pins, Conse-v quently, the springsr are maintained in compres# .sion and to accommodate the same, the handle-is provided V'with a cavity 40 in which the springs Asr before,.the innerv face of the cover has a l Alug :4L This lug is pivotally connected to a slide member 42 slida-ble ina longitudinal groove 43formed in the side of the lock cylinder. This slide `member 42 is vbox-like and has arear wall 44 to engage the rear ends of two compression springsv 45, the front ends of which abut a Wall 46 partially closing the front of the groove 43.k Inthis manner, the compression of the springs .45 draws the slide member longitudinally rear- Wardly'to maintain V.the cover in its closed position. I

As the cover `is opened, it fulcrums about its peripheral edge portion adjacent to the hinged connection with the `slide member, which is formed with la curved neck 41 to accommodate the `edge 'of the cover and permit the same to swing .beyond dead center to a position Where .the tensionof thesprin'gs holds the same in its open position.

From the `foregoing description taken in connection with the accompanying drawings, itl Will 4be readily apparent that this invention provides a substantial improvementincovers of-v key opera'ble lock cylinders in that it not only .covers the lentrance .to thekeyvvay .but also precludes the vadmissionot-water and dirt tothe joint'lbetween Lthe cylinder? and its fcasing.v

What I''cl'aim 4as my 'inventionisz d 1. In a lock of the character described: asu

lportingmember having a .boreyJa look cylinder vmounted therein; a cover-:for.thelouteriendof the cylinder, saidc'over-.being large enough to extend out beyond the junction .between 'thecylinderand -the supporting `rmem-ber and' .engaging 'the supporting member allaro'und .the mouth of its bore ing said cover 'to swing.' atwise .towardpandifrom 'the outer en'd of vIthe r.cylinder .with :the coveriful- -crumingabout .the .contact of its grim W'ith -the front Jface .of the supportingmember; and means for .yieldinglyldrawing vthev Cover .down onto `'the supportingmember.

i2. Inrconibinationwitli a'lo'ck cylinder and'its bored housing: fa cover'for theirontof the lock cylinder; a'seat forithe'cover on jthevhousing en- Icirclingtheboremean's lying Wholly .withinlthe Vconfines Vof 1said seatfor :hingedlyfmountingthe cover to swing flatwise ktoward and fromjthe '75 front of the lockcylinder with the vcover fulcruming aboutthe` contact of its Arim with the front face vof the bored housing; and means yieldingly urging the cover into iirm engagement with the seat l l l 3. 'In combination: a supporting memberhaving abore; a lock cylinder mountedin the bore; a cover for the front of the lock cylinder larger than the mouth of the bore and engageable with the front ofthe supporting member; a hinged connection-between the cover andI thev cylinder; and means yieldingly drawing the cover into rm engagement with the-front of the supporting member.y *Y

4. In combination: a'supporting-fmember having a bore; a lock cylinder mounted therein; a cover for the front end of the cylinder; a cover seat on the supporting member encircling the mouth of the bore and with which said cover is engageable with an uninterrupted contact to guardV against admission of extraneous matter and water to the joint between the cylinder and the supporting member; a hinged connection between the cover and the lock'cylinder; and spring means acting on said cover through the hinged mounted therein; a cover for the front end of the cylinder of a size large enoug'hto extend beyond the rim of the bore; a'hinged mounting for the cover including a member slidable longitudinally with respect to the cylinder and hingedly connected with the cover inwardly'of its `peripheral edge portion whereby in opening the cover,

the cover fulcrums about thev contact of its rim with the front face of the supportingl member and the rim of the bore therein; a compression spring arranged with its axis substantially parallel with the axis of the cylinder and inwardly of the outer end of the cylinde-r; and a connectionjbetween the spring and the cover whereby said spring at all times yieldingly draws the cover toward the 'supporting member.

6. In a lock of the character described: a supporting member having a bore; al'ock cylinder mounted therein; a cover for the front end `of the cylinder large enough to extend beyond the rim ofthe bore so as to cover the junction between the cylinder and the supporting member; means hingedly mounting the cover for flat-wise swinging movement from a closed position outwardly away from the supporting member to an open position; a spring; and means connecting the cover with the springin such a manner that the spring yieldingly holds the cover either in its closed or open position.

'7. In a lock of the character described: a supporting member having a bore; a lock cylinder in the bore; a cover for the front end of the lock cylinder large enough to extend beyond the periphery of the cylinder to' cover the joint between it and the supporting member; a lug on the inner face of the cover extending into the mouth of the bore, said lug being spaced from the marginal edge portion of the cover so 'as to leave said marginal edge portion unobstructed for uninterrupted engagement with the supporting member; means connected with the lug for hingedly mounting the cover; and means acting on said cover through the lug for yieldingly holding the cover in its closed position.

8. In a lock of the character described: a supporting member having a bore; a lock cylinder mounted therein; a cover for the front of the lock' cylinder large enough to extend beyond the periphery of the cylinder and cover the joint between it andthe supporting member; a cover seat encircling the mouth of the bore; a lever pivotallyconnected with `the cover inside its portion` which engages the seat; means inwardly of theA mouth of the bore for pivotally mounting said lever at a distance from its connection with the cover; and spring means acting on the cover and tending to hold the same in its closed position.

' 9; In alock of the character described: a supporting member having a bore; a lock cylinder mounted therein; a cover for the front of the lock cylinder; a cover seat on the supporting member encircling the mouth of the bore and withl which the cover is engageable with uninterrupted contact; a lever pivotally connected with the cover to one side of the longitudinal axis'of the lock and pivotally connected with the lock cylinder at the opposite side of said axis, said lever and-its pivotal connections enabling the cover to be swung to and from its closed. position; and spring means connected with the lever between its pivotal connections with the cover and cylinder yieldingly urging the lever toward the cylinder to draw the cover into firm engagement with its seat.

10. In a lock of the character described: a member having a bore; a lock cylinder mounted therein; a cover for the front end of the cylinder; 'a cover seat on said member encircling the mouth of the bore and with which the cover is engageable with `an uninterrupted contact; a lever having a pivotal connection with the cover to one side of the cover center but inwardly of its portion which engages the seat and having a pivotal connection with the cylinder at the opposite side of the center of the lock when the cover is closed; a yoke engaged over an inner end portion of the cylinder and having arms projecting forwardly; a connection betweenr said arms and the lever; and a spring yieldingly urging -the'yoke inwardly to hold the cover yieldingly down on its seat.

1l. In a lock of the character described: a supporting member having a bore; a cylinder mounted therein; a cover for the front of the cylinder large enough to extend beyond the junction of the cylinder and its supporting member; a lever of `a size to t into the mouth of the bore; a pivotal connection between the lever and the cover; a pivotal connection between the lever and the cylinder; said lever and the location of its connections with the cylinder and cover enabling the cover to be swung from a closed position at which the inner face of the cover engages the supporting member, to an open position at which the opposite front face of the cover engages the supporting member; and a spring connected with the lever medially of its pivoted connections with the cylinder and cover and acting inwardly thereon to yieldingly hold the y front of the cylinder to closeV the keyway; a stem on the'inner end of the cylinder; a yoke slidable on said stem and having arms extending forwardly beyond the front end of` the cylinder;` means connecting the arms with the cover; and a spring confined between the yoke and the inner end of the cylinder for yieldingly drawing the cover to its closed position.

14. In a lock of the characterl described: a rotatable cylinder having longitudinal grooves at diametrically opposite points in its side wall and having a keyway; a cover for the 'front end of the cylinder movable to and from aV closed position disposed over the keyway; a` stem extending from the rear, end of the cylinder; a yoke slidable on the stem and having arms slidable in said longitudinal grooves; means connecting said arms with the cover; and a spring confined betweenthe rear end of the cylinder and the yoke for yieldingly drawing the cover to its closed position.

15. In a lock of the character described: a supporting member having a bore; a cylinder mounted therein; a cover having its peripheral edge lportion engageable with the supporting member around the rim of the bore; a lug on the inner face of the cover projecting into the bore; a lug on the front face of the cylinder; a lever member having pivotal connections with said lugs; a stem projecting from the rear end of the cylinder; a yoke slidable on the stem with its arms projecting forwardly beyond the front face of the cylinder; means pivotally connecting said lever member withthe arms of the yoke; and a spring conned between the rear end of the cylinder and said yoke tending to at all times draw the lever member and consequently the cover toward the cylinder.

16. In a lock of the character described: `a supporting member having a bore; a lock cylinder mounted therein; a cover engageable with the supporting member around the rim of the bore; ya lug on the inner face of the cover inwardly -of its edge portion which engages said rim; a link pivotally connected with the lug and embracing the front end of the cylinder; a pivotal connection between said link and the supporting member diametrically opposite the connection of the link with the cover; and spring means anchored with relation to the supporting member and connected with the cover for vyieldingly drawing the cover against the supporting member.

17. In a lock of the character described: a lock cylinder having a keyway; a cover for the front end of the cylinder to close the keyway; said cylinder also having an open groove in its side; an abutment in the bottom of the groove near the front end of the cylinder; a member slidable in lsaid groove and having an abutment spaced from the abutment in the groove; a spring confined between said abutmentsvto yieldingly draw said member longitudinally toward the rear end of the cylinder; and a pivotal connection between the coverand said member.

18. In a lock of the character described: a`

supporting member having a bore; a lock cylinder mounted therein and having an open longitudinal groove in its side wall; a cover to close the mouth of the bore and engage the rim of n the bore with an uninterrupted contact; a member slidable longitudinally in said groove; abutments in the groove, one fixed with relation to the cylinder and the other with relation to the slidable member; a spring conned between said abutments to yieldingly urge the slidable member inwardly; and a pivotal connection between said slidable member and the cover.

19. In a lock of the character described: a.`

supporting member having a bore; a lockcylinder rotatable therein; a cover for the cylinder of a size large Venough to extend beyond the rim of the bore and contact the front of the supporting member; common means for hingedly mounting the cover from the cylinder and yieldy ingly drawing the cover down onto the supporting member, said means including a member slidable longitudinally with respect to the cyl-v